L.tileLayer(tileUrl.Vect.TIANDITU,{subdomains:["t0","t1","t2","t3","t4","t5","t6","t7"]}),

L.tileLayer是Leaflet中用于加载瓦片地图的函数。其中tileUrl参数是一个字符串类型，代表了瓦片图层的URL地址，用于指定需要加载的地图服务。而tileUrl.Vect.TIANDITU则是指天地图矢量地图服务的URL地址。subdomains参数是一个数组类型，用于指定服务器的子域名。在请求瓦片时，Leaflet会轮流使用这些子域名来进行负载均衡，以减轻服务器的压力，提高用户体验。

相关问题

X_train = df.loc[:25000, 'review'].values y_train = df.loc[:25000, 'sentiment'].values X_test = df.loc[25000:, 'review'].values y_test = df.loc[25000:, 'sentiment'].values from sklearn.pipeline import Pipeline from sklearn.feature_extraction.text import TfidfVectorizer from sklearn.model_selection import GridSearchCV tfidf = TfidfVectorizer(strip_accents=None, lowercase=False, preprocessor=None) param_grid = [{'vect__ngram_range': [(1, 1)], 'vect__stop_words': [stop, None], 'vect__tokenizer': [tokenizer, tokenizer_porter], 'clf__penalty': ['l1', 'l2'], 'clf__C': [1.0, 10.0, 100.0]}, {'vect__ngram_range': [(1, 1)], 'vect__stop_words': [stop, None], 'vect__tokenizer': [tokenizer, tokenizer_porter], 'vect__use_idf':[False], 'vect__norm':[None], 'clf__penalty': ['l1', 'l2'], 'clf__C': [1.0, 10.0, 100.0]}, ] lr_tfidf = Pipeline([('vect', tfidf), ('clf', ******)]) # find out how to use pipeline and choose a model to make the document classification gs_lr_tfidf = GridSearchCV(lr_tfidf, param_grid, scoring='accuracy', cv=5, verbose=2, n_jobs=-1) *号部分填什么

You can choose a classifier to use in the pipeline depending on your specific task and the nature of your data. Some commonly used classifiers for document classification include logistic regression, support vector machines (SVM), and naive Bayes.

For example, if you want to use logistic regression as your classifier, you can replace the asterisks with `LogisticRegression(random_state=0)`. The `random_state` parameter ensures that the results are reproducible.

The complete code would look like this:

from sklearn.linear_model import LogisticRegression

X_train = df.loc[:25000, 'review'].values 
y_train = df.loc[:25000, 'sentiment'].values 
X_test = df.loc[25000:, 'review'].values 
y_test = df.loc[25000:, 'sentiment'].values 

from sklearn.pipeline import Pipeline 
from sklearn.feature_extraction.text import TfidfVectorizer 
from sklearn.model_selection import GridSearchCV 

tfidf = TfidfVectorizer(strip_accents=None, 
                        lowercase=False, 
                        preprocessor=None) 

param_grid = [{'vect__ngram_range': [(1, 1)], 
               'vect__stop_words': [stop, None], 
               'vect__tokenizer': [tokenizer, tokenizer_porter], 
               'clf__penalty': ['l1', 'l2'], 
               'clf__C': [1.0, 10.0, 100.0]}, 
              
              {'vect__ngram_range': [(1, 1)], 
               'vect__stop_words': [stop, None], 
               'vect__tokenizer': [tokenizer, tokenizer_porter], 
               'vect__use_idf':[False], 
               'vect__norm':[None], 
               'clf__penalty': ['l1', 'l2'], 
               'clf__C': [1.0, 10.0, 100.0]}, 
              ] 

lr_tfidf = Pipeline([('vect', tfidf), 
                     ('clf', LogisticRegression(random_state=0))]) 

gs_lr_tfidf = GridSearchCV(lr_tfidf, param_grid, 
                           scoring='accuracy', 
                           cv=5, 
                           verbose=2, 
                           n_jobs=-1)

import sys import re import jieba import codecs import gensim import numpy as np import pandas as pd def segment(doc: str): stop_words = pd.read_csv('data/stopwords.txt', index_col=False, quoting=3, names=['stopword'], sep='\n', encoding='utf-8') stop_words = list(stop_words.stopword) reg_html = re.compile(r'<[^>]+>', re.S) # 去掉html标签数字等 doc = reg_html.sub('', doc) doc = re.sub('[０-９]', '', doc) doc = re.sub('\s', '', doc) word_list = list(jieba.cut(doc)) out_str = '' for word in word_list: if word not in stop_words: out_str += word out_str += ' ' segments = out_str.split(sep=' ') return segments def doc2vec(file_name, model, doc_id): start_alpha = 0.01 infer_epoch = 1000 doc = segment(codecs.open(file_name, 'r', 'utf-8').read()) return model.infer_vector(doc, alpha=start_alpha, steps=infer_epoch) # 计算两个向量余弦值 def similarity(a_vect, b_vect): dot_val = 0.0 a_norm = 0.0 b_norm = 0.0 cos = None for a, b in zip(a_vect, b_vect): dot_val += a * b a_norm += a ** 2 b_norm += b ** 2 if a_norm == 0.0 or b_norm == 0.0: cos = -1 else: cos = dot_val / ((a_norm * b_norm) ** 0.5) return cos def test_model(file1, file2): print('导入模型') model_path = 'tmp/zhwk_news.doc2vec' model = gensim.models.Doc2Vec.load(model_path) vect1 = doc2vec(file1, model, doc_id=0) # 转成句子向量 vect2 = doc2vec(file2, model, doc_id=1) print(vect1.nbytes) # 查看向量大小 print(vect2.nbytes) cos = similarity(vect1, vect2) print('相似度：%0.2f%%' % (cos * 100)) if __name__ == '__main__': file1 = 'data/corpus_test/t1.txt' file2 = 'data/corpus_test/t2.txt' test_model(file1, file2) 报错AttributeError: 'Doc2Vec' object has no attribute 'dv'怎么解决

这个错误可能是因为gensim版本的问题导致的，可以尝试将gensim版本降到3.8.1及以下。具体操作可以使用以下命令：

!pip install gensim==3.8.1

或者可以在代码中加入以下语句：

model.delete_temporary_training_data(keep_doctags_vectors=True, keep_inference=True)

这句话可以清除模型中的临时训练数据，可能可以解决这个错误。